12226637 has 2 divisors, whose sum is σ = 12226638. Its totient is φ = 12226636.

The previous prime is 12226631. The next prime is 12226649. The reversal of 12226637 is 73662221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11792356 + 434281 = 3434^2 + 659^2 .

It is a cyclic number.

It is not a de Polignac number, because 12226637 - 2⁶ = 12226573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12226631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6113318 + 6113319.

It is an arithmetic number, because the mean of its divisors is an integer number (6113319).

Almost surely, 2^12226637 is an apocalyptic number.

It is an amenable number.

12226637 is a deficient number, since it is larger than the sum of its proper divisors (1).

12226637 is an equidigital number, since it uses as much as digits as its factorization.

12226637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 29.

The square root of 12226637 is about 3496.6608357117. The cubic root of 12226637 is about 230.3751721916.

Adding to 12226637 its reverse (73662221), we get a palindrome (85888858).

The spelling of 12226637 in words is "twelve million, two hundred twenty-six thousand, six hundred thirty-seven".